Numerical Simulation And Thermal Test Program Of Blast Furnace Bosh Cast Copper Cooling Wall

BF campaign is of great significance for efficient, sustainable development of iron and steelenterprises. The service life of the cooling wall is one of the fundamental factors affecting thelife of a blast furnace, and therefore subject to focus on the stave efficient longevity research.Practice shows that poor working conditions of the blast furnace abdominal area is restrictedpart of the blast furnace longevity. Since good thermal conductivity of copper staves and easy toform a stable slag skin, it was agreed to use the copper stave in the abdominal area of the blastfurnace. Buried the brass cast copper cooling wall is a new type cooling wall，which realizedthrough the use of reasonable casting process, a metallurgical bond between the body and brass,and complete elimination of the air gap layer. This cooling performance of the wall is almostwith rolling copper stave, but less manufacturing process, smaller energy consumption, lowercost. So it has a strong market competitiveness and good prospects for development. Buried thebrass cast copper cooling wall has been successfully applied to a number of large domestic steelmill blast furnace abdominal area.At present, the research is mainly limited in conventional structure of the wall of the bodyupright, but the research of the bosh regional wall inclined structure and optimization is verylittle. Therefore,in order to perfect cast copper cooling stave research, enhance the coolingperformance of the cooling wall and extend the life of the cooling wall and even blast furnace,this paper carries out structural improvements and numerical simulations on buried the brass castcopper cooling stave in bosh area,and proposes casting process and thermal test program.Mainworks of the thesis are as follows：(1)Analyze stave water pipes breakage in bosh region and improve inlet boss structure of castcopper stave in the region.(2)By the finite element analysis and numerical simulation of the thermal-structural couplingmethod, the temperature fields, stress fields and heat distortions before and after the cooling wallinlet pipe boss improved is analyzed and compared.Proved that stave the inlet pipe boss structureimproved will have better cooling performance and lower the probability of damage.(3)By this model of improved cast copper stave，make further simulations on the relevantfactors affecting the temperature field and stress field and abnormal conditions.(4)Carry out a preliminary study on casting process and thermal test program of cast copperstave improved in bosh region.